gitlab-org--gitlab-foss/app/services/check_gcp_project_billing_service.rb

class CheckGcpProjectBillingService
  def execute(token)
    client = GoogleApi::CloudPlatform::Client.new(token, nil)
    client.projects_list.select do |project|
      client.projects_get_billing_info(project.name).billingEnabled
    end
  end
end